Modular stent device for multiple vessels and method

Abstract

The techniques of this disclosure generally relate to modular stent device and method of deploying the same. The method includes introducing a delivery system including the modular stent device via supra aortic access. The delivery system is advanced into the ascending aorta. Once positioned, the modular stent device is deployed from the delivery system such that an artery leg of the modular stent device engages the brachiocephalic artery and a bypass gate engages the aorta, wherein the artery leg partially collapses the bypass gate. The artery leg has a greater radial force than the bypass gate such that the artery leg remains un-collapsed and opened. Accordingly, blood flow through the artery leg and perfusion of the brachiocephalic artery and preservation of blood flow to cerebral territories including the brain is insured.

What is claimed is: 
     
         1 . An assembly comprising:
  a modular stent device comprising:    a main body;    a bypass gate extending distally from a distal end of the main body; and   an artery leg extending distally from the distal end of the main body,   wherein the artery leg has a greater radial force than a radial force of the bypass gate,   wherein the main body has a first longitudinal axis, the bypass gate has a second longitudinal axis, and the artery leg has a third longitudinal axis, the first, second, and third longitudinal axes are parallel with one another when the modular stent device is in a relaxed configuration.   
     
     
         2 . The assembly of  claim 1  wherein a length of the artery leg is greater than a length of the bypass gate. 
     
     
         3 . The assembly of  claim 2  wherein the length of the artery leg is measured along the third longitudinal axis, and the length of the bypass gate is measured along the second longitudinal axis. 
     
     
         4 . The assembly of  claim 1  further comprising a radiopaque marker in line with the artery leg. 
     
     
         5 . The assembly of  claim 1  further comprising a tip capture mechanism to control proximal deployment accuracy of the main body. 
     
     
         6 . The assembly of  claim 1  wherein the main body has a first diameter, the bypass gate has a second diameter, and the artery leg has a third diameter, the first diameter being greater than the second diameter and the third diameter together at a transition region where the main body meets the bypass gate and the artery leg. 
     
     
         7 . The assembly of  claim 6  wherein the bypass gate and the artery leg are located within an imaginary cylinder defined by the main body extended in a distal direction at the transition region. 
     
     
         8 . The assembly of  claim 6  wherein the second diameter is greater than the third diameter at the transition region. 
     
     
         9 . The assembly of  claim 1  wherein stents of the artery leg have a greater radial force than stents of the bypass gate. 
     
     
         10 . The assembly of  claim 1  wherein the bypass gate is configured to collapse relative to the artery leg. 
     
     
         11 . The assembly of  claim 1  further comprising a tube graft coupled to the bypass gate and extending distally therefrom. 
     
     
         12 . The assembly of  claim 1  further comprising a proximal cuff coupled to the main body and extending proximally therefrom. 
     
     
         13 . The assembly of  claim 1  wherein a length of the artery leg is less than a length of the bypass gate.